Detailed sailboat specifications and datasheets since 2015
MetricSI (m)
Imperial & Metricboth
ImperialIMP (ft)

Idylle 8.80 (Fin keel) vs Idylle 8.80 (Twin keel)

Main featuresIdylle 8.80 Fin keelIdylle 8.80 Twin keel
Model
Idylle 8.80
Idylle 8.80
Version
Fin keel
Twin keel
Hull type
Monohull
Monohull
Category
Motorsailer
Cruising sailboat
Sailboat builder
Bénéteau
Bénéteau
Sailboat designer
Sailboat range
Country
France
France
Construction
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich balsa fiberglass polyester
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich balsa fiberglass polyester
Number of hulls built
About 150
About 150
First built hull
1982
1982
Last built hull
1987
1987
Appendages
Keel : fin without bulb
Twin keel : fin without bulb
Helm
Single tiller
Single tiller
Rudder
Single semi-spade rudder
Single semi-spade rudder
Unsinkable
No
No
Trailerable
No
No
Former French navigation category
2
2
 
Main dimensionsIdylle 8.80 Fin keelIdylle 8.80 Twin keel
Overall length
28’ 11”8.8 m
28’ 11”8.8 m
Hull length
27’ 11”8.5 m
27’ 11”8.5 m
Waterline length
24’7.3 m
24’7.3 m
Beam (width)
9’ 10”3 m
9’ 10”3 m
Draft
4’ 1”1.25 m
3’ 7”1.1 m
Light displacement (MLC)
7385 lb3350 kg
7518 lb3410 kg
Ballast weight
2425 lb1100 kg
2557 lb1160 kg
 
Rig and sailsIdylle 8.80 Fin keelIdylle 8.80 Twin keel
Upwind sail area
411 ft²38.2 m²
411 ft²38.2 m²
Mainsail area
140 ft²13 m²
140 ft²13 m²
Genoa area
271 ft²25.2 m²
271 ft²25.2 m²
Rigging type
Sloop Marconi masthead
Sloop Marconi masthead
Mast configuration
Deck stepped mast
Deck stepped mast
Rotating spars
No
No
Number of levels of spreaders
1
1
Spreaders angle
0 °
0 °
Spars construction
Aluminum spars
Aluminum spars
Standing rigging
1x19 strand wire continuous
1x19 strand wire continuous
 
PerformancesIdylle 8.80 Fin keelIdylle 8.80 Twin keel
Upwind sail area to displacement
 iThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.

The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size.

Upwind: under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 25 it indicates a fast sailboat.
184 ft²/T17.06 m²/T
181 ft²/T16.86 m²/T
Displacement-length ratio (DLR)
 iThe Displacement Length Ratio (DLR) is a figure that points out the boat's weight compared to its waterline length. The DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet).
The DLR can be used to compare the relative mass of different sailboats no matter what their length:

a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.
244
248
Ballast ratio
 iThe Ballast ratio is an indicator of stability; it is obtained by dividing the boat's displacement by the mass of the ballast. Since the stability depends also of the hull shapes and the position of the center of gravity, only the boats with similar ballast arrangements and hull shapes should be compared.

The higher the ballast ratio is, the greater is the stability.
33 %
34 %
Critical hull speed
 iAs a ship moves in the water, it creates standing waves that oppose its movement. This effect increases dramatically the resistance when the boat reaches a speed-length ratio (speed-length ratio is the ratio between the speed in knots and the square root of the waterline length in feet) of about 1.2 (corresponding to a Froude Number of 0.35) . This very sharp rise in resistance, between speed-length ratio of 1.2 to 1.5, is insurmountable for heavy sailboats and so becomes an apparent barrier. This leads to the concept of "hull speed".
The hull speed is obtained by multiplying the square root of the waterline length (in feet) by 1.34.
6.56 knots
6.56 knots
 
Auxiliary engineIdylle 8.80 Fin keelIdylle 8.80 Twin keel
Engine(s)
1 inboard engine
1 inboard engine
Engine(s) power
30 HP
30 HP
Fuel type
Diesel
Diesel
Fuel tank capacity
21.1 gal80 liters
21.1 gal80 liters
 
Accommodations and layoutIdylle 8.80 Fin keelIdylle 8.80 Twin keel
Cockpit
Closed aft cockpit
Closed aft cockpit
Cabin(s)
1
1
Berth(s) (min./max.)
3 / 5
3 / 5
Head(s)
1
1
Freshwater tank capacity
26.4 gal100 liters
26.4 gal100 liters
Maximum headroom
6’1.82 m
6’1.82 m
 
Aft cabinIdylle 8.80 Fin keelIdylle 8.80 Twin keel
Berth length
6’ 7”2 m
6’ 7”2 m
Berth width
3’0.9 m
3’0.9 m
 
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